Cigarette machine



Jan. 3, 1933. M. P. E. HOHN 1,893,057

CIGARETTE MACHINE Filed Nov. 29, 1927 4 Sheets-Sheet 1 Fig. 4

Jan. 3, 1933. M. P. E. HOHN CIGARETTE MACHINE Filed Nov. 29. 1927 Fig. 2

4 Sheets-Sheet 2 Jan. 3, 1933. M. P. E. HOHN CIGARETTE MACHINE 4 Sheets-Sheet 3 Filed Nov. 29, 1927 Fig. 3

Jan. 3, 1933. M. P. E. HOHN CIGARETTE MACHINE Filed Nov. 29, 1927 4 Sheets-Sheet 4 Fatented Jan. 3, 1933 UNlTEfi STATES kATENT MAX PAUL ERNST HORN, 0F DRESDEN, GERMANY, ASSIGNOR TO THE FIRM: UNI- VERSELLE GERMANY CIGARETTENIIASCHINEILFABRIK J. C. MULLER, & 00., OF DRESDEN,

CIGARETTE MACHINE Application filed November 29, 1927, Serial No. 236,547, and in Germany September 12, 1827.

This application is a continuation in part of my I co-pending application, Serial Number 141,779,1iled October 15,1926.

. For the cutting up of a cigarette string into separate cigarettes the arrangement of a vibrating rotating crescent-shaped knife is known. By virtue of thevibrating or wavlDgIDOVGHlQIlt effected in the direction of the string the knife is able to follow the movement of the string in one phase of the rotation, and, penetrate into the eccentric rotation,

so that neither a reciprocating movement with the string nor a reciprocating movement at right angles. to the string is required for the knifepivot or its bearing. Since, however,

'the vibrating movement only goes with the 'string'in a certain phase of the revolution,

and since therefore the efiecting of the cut is limited to the angle at the centre of the rotation circle corresponding to this phase, a

jparticular speed of revolution of the knife iscompulsory, so that the magnitude of the pulling novement'of the knife edge in contact with the tobacco string is limited. The

same limitation would be necessary if the knife edge itself forms a circle concentric with the axis.

According to the present invention a c1rcu lar knife is itself rotatably mounted outside the axis of a pivot stationarily supported beside the string, on a vibrating or swaying carrier carried by t ie said pivot, and is driven round its own axis, so that it revolves in an O1'blt'l1k6 a planet and at the same time rocks or vibrates. There is now no longer any limitation, for the effecting of thecut, to a particular phase of a complete revolution of the knife, so the path traversed during the out by a point on the knife edge can be made as long as may be desired, so that a pulling cut is attained in the completest possible sense, and-the blunting wear is distributed overa great length of edge and is therefore specifically reduced. A similar advantage applies with regard to thepatli of contact between the knife disc and the sharpening device, so that the resharpening or whetting can be effected upon a long path of contact, with correspondingly smooth action of the elements in question on the knife edge. 55 Such a cutting device, in conjunction with the above-mentioned sharpening device, is illustrated in the accompanying drawings,

wherein Fig. 1 shows in side elevation a cutting and sharpening device with a circular knife according to the invention.

2 shows a plan thereof,

Fig. 3 shows an elevation of the grinding device, and v0 Figs. 4C, 5 and 6 show respectively an elevation, a side elevation and a plan of the knife arrier on a somewhat larger scale.

The circular knife 1 is supported with its pivot 2 in a bearing eye 8 of a carrier 1. The carrier at is arranged on a shaft 5 in such a manner that during its rotation it executes a swaying or oscillating movement. Upon the pivot of the circular knife is mounted a cord pulley G, which is connected by a crossed driving cord 7 with a cord pulley 9, secured to a holder 8 and arranged coaxially in relation to the shaft 5. The crossing of the driving cord is for the purpose of giving the circular knife the more correct direction of i'otar tion and of obtaining a more favorable bearing of the driving cord on the pulleys.

In order to enable the carrier to be conveniently adjusted, the end of the shaft 5 projecting out of a casing 10 is constructed as a fork 11. Into the fork there projects a hearing eye 12 arranged on the rear wall of the part a of the carrier. This hearing eye surrounds a pivot bolt 13, which is carried by the ends of the forked arm 11. Accordingly the knife car ier 1, 4 can l e roc about the bolt 13. The fixing in the desired position is effected by means of positioning screws 14:, which are carried by arms 15 arranged one on each side of the fork 11 and mounted on the rear wall of the part i of the knife carrier. The ends of these screws, upon being adjusted, bear against the fork 11. Hence in this manner any desired oblique position of the knife carrier 4- can be brought about at any time without dificulty, so thatthe circular knife 1 can be adjusted according to the velocity of the string. At the same time the angular position of the knife shaft 5 in relation to the axis of the string can be regulated i in such a way that though the circular knife V 1, While the cut is being effected, moves in the direction of feed of the string and Withthe same velocit as the strin the cut nevertheless-goes through the string exactly at right 7 angles. In order to enablethe knife to be ad- 7 justed in a radial direction, slots 17 are prospur wheel 26.

IA grind'ng disc 27 serves for the grinding ofthe clrcular knife 1,rand slnce the carrier, executes a vlbratlng movement, the cutting edge coming into contact with the grinding disc describes a curve, forwhich reason the grinding disc may beicontrolled by'corresponding means.

H On the knife edge the grinding disc produces a facet cut, as illustrated by Figure 6. For this reason the'spindle 28 of the grinding disc must be adjusted at a corresponding inclination to the surface of the knife. VThe spindle of the grinding disc is supported, in a bearing 29 and carries at its free end a nut 30a nd a lock nut 31, for thepurpose of accurately adjusting the spindle and consequently also the grinding disc 27. The bear ing 29 is mounted upon a disc-shaped plate 32, which is rotatable upon a correspondingly disc-shaped base plate 33 by virtue of concentric slots 34c for the connecting screws for the purpose of enabling the correct obliquity of the spindle 28to be obtained relatively to the plane of the knife.

A carrier plate 33 is mounted at the end of a swing frame 34a, which swings about a bolt 35. This bolt is carried by a bearing eye 86, which is mounted on a slide 37. The slide is shdablev in ahorizontal guide 38 in a guiding piece 40 located on the part 39 of the frame. This displacement of the slide 37 is effected by means of a screw-threaded spindle 41, which extends into a screw-threaded .borein the slide, is keptengaged in a projec tion 4t2 on the guiding piece 40, andcarries'on itsexposedend a hand wheel 43. j

\Vith the swing frame 34a there engages at I :44, with.theinterposition of a link 46, a rod .45 guided in a straight line at 47. The other 7 end of the rod is pivoted to'a connecting rod 18, whichis moved by a crank pin 49 on a spur wheel 50. Accordingly by means of the crank and connecting rod gear 49, 48, 45, 46 and I, the swing frame 84a the'grind-ingdisc 27 isso s controlled when moving pastthe obliquely positioned circular knife that it always makes contact with the cutting edge. 7

The grinding disc 27 hasno special drive but rotates a few degrees owing to the contact of the cutting edge of the circular knife with the grinding disc slipping past it.

WhatIclaimis:-

ILA cigarette string cutting device for cigarette machines, comprising, a knife carrier, a shaft for rotating said carrier, a circular knife mounted on said carrier, outside the axis of rotation thereof, means for'causing sald clrcular knife to rotateand meansfor causlng said carrier to vibrate with any desired amplitude as it rotates, said =last' named means comprising, a forked projec tlOIl formed on one end of said shaft, apivot- V ing bolt carried by saidfork, albearing eye ject into said-fork and surround said bolt, and locking means for fixing said carrier in any desired position about said bolt, whereby the knife edge follows the forward feeding movement of the cigarettestring being fed to said machine.

arranged on said carrier and adapted to pro: g

[2. A'deviceas per claim 1, in which said" means for rotating said circular knife include apulley coaxially secured to saidci'rcular knife, an immovable pulley mounted With its axis in the axis of rotation of the knife carrier,

and an endless driving band connecting said pulleys with one another, whereby when said carrier is rotated saidfirst pulley willalso rotate.

' 3. Acigarette string cutting device for cig-' arettemachines comprising a knife carrier,

means for drivingsaid knife carrier in a rotarypath only,'means for adjusting the angular position of said carrier relative to said driving means for causingsaid knife carrier to vibrate with any desired amplitude, means for fixing said carrier in said adjusted position,,a' circular knife adjustably supported on said carrier outside the axis'oflrota'tion of the latter, a pulley coaxially secured to said circular knife, an immovable P e mount ediwith its axis inthe axis of rotation of the knife carrier,and an endless driving band connecting said pulleys withoneanother, the motion of the carrier beingsuch that during the cuttingof a fed cigarette string -by saidv knife the knife edge follows the forward feeding movement of'the cigarette string.v

rier, a, driven shafton which said carrier is mounted, means for adjusting the angular position of said carrier relativeto the longitudinal axis'of said driven shaft means for fixing said carrier in said adjusted position, a

circular cutter rotatably supported on said 1130' 14; A cigarette string cutting device for cig o "arette rod machines having a continuously fed cigarette string comprising a knife car- V about its own center.

In testimony whereof I have signed my name to this specification.

AX PAUL ERNST HOHN. 

